Werk #10747: ibm_svc_mdisk: don't crash on discovery

Component Checks & agents
Title ibm_svc_mdisk: don't crash on discovery
Date Feb 24, 2020
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.6.0p10 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

On devices that do not support the lsmdisk command the check plugin ibm_svc_mdisk failed so that the "Check_MK Discovery" service showed the error "UNKN - check failed - please submit a crash report!". This is fixed.

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